I have a bottle of this now. It's great and will make for a good Spring and summer scent. I bought it at Neiman Marcus... I'd previously bought a sample from a discounter. The sample smelled terrible compared to this - not even close. I'm wondering if it was a fake.
I think SMW is a "clean" scent. I pick up on the blackcurrant, tea, musk, bergamot.... Here's a description at Basenotes:
http://www.basenotes.net/ID26121487.html
It's Creed so it's pricy but there's also this:
Al-Rehab Silver: http://amzn.com/B005TT8V2Q
It is quite similar but I think it has a lemon note to it. At $3.59 for .2oz of highly concentrated perfume oil (it goes a long, long way) this is an alternative and is priced like a sample or tiny decant.